TPS2376D - English Editing Encyclopedia Entry

Product Overview

Category

The TPS2376D belongs to the category of integrated circuits (ICs) specifically designed for power over Ethernet (PoE) applications.

Use

This IC is primarily used in PoE systems to provide power and data transmission over a single Ethernet cable. It enables the delivery of power to network devices such as IP cameras, wireless access points, and VoIP phones.

Characteristics

• Power over Ethernet (PoE) compatible
• High efficiency power management
• Integrated protection features
• Compact package size
• Easy integration into existing designs

Package and Quantity

The TPS2376D is available in a small outline integrated circuit (SOIC) package. It is typically sold in reels or tubes containing a specified quantity of ICs per package.

Specifications

• Input voltage range: 36V to 57V
• Output voltage: Programmable from 3.3V to 12V
• Maximum output current: 600mA
• Operating temperature range: -40°C to +85°C
• Power dissipation: 1.5W (max)

Pin Configuration

The TPS2376D has a total of 8 pins, each serving a specific function:

1. VDD: Power supply input pin.
2. GND: Ground reference pin.
3. VSS: Negative supply voltage pin.
4. VOUT: Output voltage pin.
5. FB: Feedback pin for output voltage regulation.
6. EN: Enable pin for controlling the device's operation.
7. ILIM: Current limit setting pin.
8. VIN: Input voltage pin.

Functional Features

• Integrated power MOSFET for efficient power conversion.
• Automatic detection and classification of powered devices.
• Overcurrent and overtemperature protection.
• Under-voltage lockout (UVLO) for enhanced system reliability.
• Adjustable output voltage to accommodate various device requirements.

Advantages and Disadvantages

Advantages

• Simplifies PoE system design by integrating key functions into a single IC.
• High efficiency power management reduces energy consumption and heat dissipation.
• Comprehensive protection features safeguard the system and connected devices.
• Compact package size allows for space-efficient designs.
• Easy integration into existing PoE systems due to its compatibility with industry standards.

Disadvantages

• Limited maximum output current may not be suitable for high-power devices.
• Requires additional external components for complete PoE system implementation.
• Sensitive to input voltage fluctuations, necessitating proper input voltage regulation.

Working Principles

The TPS2376D operates based on the principles of power over Ethernet. It receives power from the Ethernet cable and converts it to the desired output voltage using an integrated power MOSFET. The IC also performs device detection and classification to ensure proper power delivery to connected devices. Various protection mechanisms, such as overcurrent and overtemperature protection, are implemented to safeguard the system and prevent damage.

Application Field Plans

The TPS2376D finds extensive application in the following fields:

1. IP Surveillance Systems: Enables power and data transmission to IP cameras, eliminating the need for separate power cables.
2. Wireless Access Points: Provides power to wireless access points, simplifying installation and reducing wiring complexity.
3. Voice over IP (VoIP) Phones: Enables power delivery to VoIP phones, eliminating the need for separate power adapters.
4. Network Switches: Facilitates power distribution within network switches, enhancing overall system efficiency.

Alternative Models

For users seeking alternative options, the following models can be considered:

1. TPS2376E: Similar to TPS2376D but with a higher maximum output current of 800mA.
2. TPS2376F: Offers additional features such as integrated thermal shutdown and adjustable current limit.
3. TPS2376G: Provides enhanced protection features, including overvoltage and reverse polarity protection.

In conclusion, the TPS2376D is a versatile IC designed for power over Ethernet applications. Its compact size, high efficiency, and comprehensive protection features make it an ideal choice for various PoE systems. However, users should consider alternative models based on specific requirements and desired functionalities.

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